Prominent Collaborator I

Answered

ARC intermittent connection loss possibly with Atmos only

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Hi all. So far I think this is isolated to Atmos content however randomly while watching Prime Video or Disney content outputting Atmos (through fire stick 4K) I will lose signal (Beam gen 2 and two one sl’s as surround). When it happens I lose sound, the screen flashes and my tv’s LG logo appears for a second before going back to Disney or prime (whatever I’m watching). I can push play and everything works again, but almost seems like something with the HDMI arc input is being “lost” for a split second. Or maybe it’s the signal loss for a split second?

I’ve changed HDMI cords and powered down both the tv and Beam to try and reset but no luck. Randomly happens, sometimes 5 minutes in and other times maybe 15 in. Any ideas?

fyi I recently changed to using SonosNet (beam hardwired Ethernet) as opposed to all wireless is this possibly an issue that anyone knows about?

Setup as follows:

Moderator edit: Removed picture with serial numbers

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RaultTNAnswer

Prominent Collaborator I

Well gentlemen @Ken_Griffiths and @ThatOneDude I think I am marking this as resolved. Made it through the entire Disney + Atmos movie, and now running through an Amazon Prime Atmos show just to make sure but all is working as advertised and nothing cutting our nor any lip sync issues. My System and settings are as follows:

System: LG TV with a Firestick 4K in HDMI 1, Sonos Beam (Gen 2) in HDMI 2 (Arc) both connected via HDMI.

LG TV Settings:

HDMI: ARC

Digital Sound Out: Auto

HDMI Input: all inputs set to Bitstream

Firestick 4K Settings:

Video Resolution: Auto

Match Original Frame Rate: Off

Color Depth: Up to 10 bits

Color Format: Auto

Dynamic Range Setting: Adaptive

Surround Sound: Best Available

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ThatOneDude

Lyricist III

So it happened again did it? But it wasnt as often right? Hmmmmmmm, and your "HDMI ARC" is set to Pass-through correct? Thats weird, they always say that doing a complete reset restablishes the connections properly so give that a go, why not. Unplugging everything from the wall sockets and Unplugging all the HDMI connections from the TV, and waiting a few minutes is the way I would do it. Then replug the HDMI and Power back. Other than that I dont really know what else we could do tbh. Troubleshooting sucks 😆

I dont use Prime itself for my media consumption so its good to know that it has the same Apple TV+ Problem (but prime has a way the change it as you mentioned). @RaultTN

RaultTNAuthor

Prominent Collaborator I

So it happened again did it? But it wasnt as often right? Hmmmmmmm, and your "HDMI ARC" is set to Pass-through correct? Thats weird, they always say that doing a complete reset restablishes the connections properly so give that a go, why not. Unplugging everything from the wall sockets and Unplugging all the HDMI connections from the TV, and waiting a few minutes is the way I would do it. Then replug the HDMI and Power back. Other than that I dont really know what else we could do tbh. Troubleshooting sucks 😆

I dont use Prime itself for my media consumption so its good to know that it has the same Apple TV+ Problem (but prime has a way the change it as you mentioned). @RaultTN

So when I do a full reset on the TV should I have everything unplugged from the TV HDMI ports when I perform the action? And then once the reboot happens, turn off the TV again, plug all HMDI ports back in and crank it all on together? I want to be sure I follow the right steps. Also along the same lines, do I power the tv on first and then the peripherals (Firestick, Sonos, etc.)? or should I have the Firestick and Sonos powered on before powering back on the TV?

ThatOneDude

Lyricist III

Yes you inplug it all, HDMI and Power to said devices. I read you plug in the HDMI connections first and then the power to everything. Idk if there is a certain order for when you plug back in(to wall sockets). Try it a few different ways, just try not to go crazy 😜 @RaultTN

ThatOneDude

Lyricist III

At the end of the day maybe we just need to get one of those fancy devices @Ken_Griffiths recommended ya know. @RaultTN

RaultTNAuthor

Prominent Collaborator I

Guys @Ken_Griffiths and @ThatOneDude It pains me to write this and it may be too soon but check this out. Against everything I have read, I changed my LG tv to “Digital Sound Out” -to “AUTO” (instead of Pass-Through), put HDMI 1 back to Bitstream, and have the Firestick on Best Available. I am currently 20 minutes into Moana and no lip sync and no cut out. Confirmed I am receiving Atmos through the Sonos App.

I swear to all that is holy, if that TV Pass-through setting being changed to Auto is what fixes this entire thing, I may lose my ever loving mind haha. Im going to let this ride for rest of the movie before I do any reboot. What in the world is going on!?! @Ken_Griffiths Did you say you also have Pass-Through set on your LG tv? Or do you possibly have it on "Auto”?

Ken_Griffiths

I have set my LG C9 TV to ‘pass-through’ as I have set the audio codecs on the attached devices and so the TV does not try to process the audio and just lets it pass through its ports .. but note the default setting on almost all TV’s is ‘Auto’.

RaultTNAuthor

Prominent Collaborator I

I have set my LG C9 TV to ‘pass-through’ as I have set the audio codecs on the attached devices and so the TV does not try to process the audio and just lets it pass through its ports .. but note the default setting on almost all TV’s is ‘Auto’.

Interesting so I wonder if this eARc setting has anything to do with ithe differences on how it functions? My tv only have HDMI ARC (no eARC). And still no cutout at this point. I think that was it gentlemen. And yes I do recall it being set to Auto originally but everything I read mentioned Pass-Through but maybe how this particular TV is communicating with the Firestick this is how it needs to be set up? Remember also that without the Firestick, using just the Smrt TV apps and had the setting on Pass-Through it worked great (no cutout).

@ThatOneDude You may try changing on your end to see if you get the same result. Mind blown but I am deep into Moana (Atmos) and still working like a dream. Unreal.

ThatOneDude

Lyricist III

Ill report my results tomorrow, keep me posted. @RaultTN

RaultTNAuthorAnswer

Prominent Collaborator I

Well gentlemen @Ken_Griffiths and @ThatOneDude I think I am marking this as resolved. Made it through the entire Disney + Atmos movie, and now running through an Amazon Prime Atmos show just to make sure but all is working as advertised and nothing cutting our nor any lip sync issues. My System and settings are as follows:

System: LG TV with a Firestick 4K in HDMI 1, Sonos Beam (Gen 2) in HDMI 2 (Arc) both connected via HDMI.

LG TV Settings:

HDMI: ARC

Digital Sound Out: Auto

HDMI Input: all inputs set to Bitstream

Firestick 4K Settings:

Video Resolution: Auto

Match Original Frame Rate: Off

Color Depth: Up to 10 bits

Color Format: Auto

Dynamic Range Setting: Adaptive

Surround Sound: Best Available

RaultTNAuthor

Prominent Collaborator I

A PCM audio setting should get rid of any lip-sync issues. as it’s the default stereo output for all TV’s and is recommended if the TV is old and it’s processor slow and cannot ‘pass-through’ the audio.

Personally, in those type of cases, I would recommend the user opts to use an audio-extractor instead and bypass the TV altogether. There are three common extractors mentioned in the community here for those that have lip-sync issues due to the reasons mentioned, the extractors are:

HDFury Arcana

https://www.hdfury.uk/product/hdfury-arcana/

Feintech VAX04101A

https://feintech.eu/en/collections/hdmi-topseller/products/feintech-vax04101-hdmi-earc-pass-switch-4x1-for-soundbar

OREI HDA-931 or OREI HDA-935

https://www.orei.com/products/dual-hdmi-earc-audio-extractor-converter-4k-60hz-18g-hdmi-2-0-arc-support-hda-931

Hey @Ken_Griffiths Do you have any US equivalent that you suggest? I noticed that although Prime and Disney etc are working great, I do have a little bit of lip sync on YouTubeTv only and only when the content is being streamed in DD 2.0. I see I can get the HDFury but the reviews arent great. Any other suggestions or do you think that should do the trick since I am using a Firestick 4K?

Or is that more than I need since I am already getting Atmos content? Is there something else that I could get that would help with lip sync? When I change the setting through the Sonos app it works, but then I am off again when going to DD+ content

Thanks again for all of your help!

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